| Milecastle 48 | |
|---|---|
 The remains of Milecastle 48, showing that it was built on a steep slope | |
  Location within Cumbria | |
| Type | Milecastle |
| Place in the Roman world | |
| Province | Britannia |
| Structure | |
| — Stone structure — | |
| Size and area | 18.5 m × 21.3 m (0.04 ha) |
| Location | |
| Coordinates | 54°59′20″N 2°34′24″W / 54.988991°N 2.573425°W |
| County | Cumbria |
| Country | England |
| Reference | |
| UK-OSNG reference | NY6340666195 |
Milecastle 48 (Poltross Burn), is a milecastle on Hadrian's Wall (grid reference NY6340666195). Its remains lie near the village of Gilsland in Cumbria where it was historically known as "The King's Stables", owing to the well-preserved interior walls. Unusually a substantial section of stone stairs has survived within the milecastle. The two turrets associated with this milecastle have also survived as above-ground masonry.